Readers from Zimmer's "Inside Columbia" magazine have once again voted Just Jeff's as the best burger in town. Just Jeff's owner Jeff Spencer was orphaned at a young age in Iowa, and ended up moving to Columbia with his uncle, who owned the Boonville livestock auction. Mr. Spencer started his business on a hot dog cart downtown. He joined 939 the Eagle host Fred Parry in-studio for the hour on Saturday's "CEO Round Table":